The article includes a quote from Nicolas Gisin, a reference to Einstein, and a not-so-accurate chart explaining how photons are entangled (leaving out the PDC crystal's role).

Meanwhile, I thought I would post a link for those who are interested in recent articles in on EPR, Bell and/or entanglement. The link below yields anything with those keywords submitted in 2009 to Cornell's preprint archives. There were 356 such articles as of this morning.

This gives you a pretty good idea of the wide variety of work being done in this area. There were over a 1000 articles last year, so there is a lot out there! Please keep in mind that the preprints themselves are NOT peer-reviewed, although they are widely read - and occasionally commented on in the archives themselves.

Dear Group, since I always try to speak honestly, I feel that I should mention that Professor Eberly's discovery of the sudden death of quantum entanglement could place an important restraint not just upon quantum computation but also upon Conway and Kochen's recent mathematical physics definition of free will as the opposite of both determinism and randomness.

Of course, this will depend upon how prevalent the sudden death of quantum entanglement is in Nature.